AKKOUCHI, Mohamed; POPA, Valeriu. Altering distances and fixed point results for tangential hybrid pairs of mappings. Annales Mathematicae Silesianae, [S. l.], v. 26, p. 25–41, 2013. Disponível em: https://journals.us.edu.pl/index.php/AMSIL/article/view/14011. Acesso em: 5 dec. 2025.